Normal: 36–38.4°C; APACHE II: 0 pts normal; 4 pts for ≥41°C or <30°C

Normal MAP: 70–100 mmHg; critical: <50 mmHg (shock) or >160 mmHg (hypertensive crisis)

Normal HR: 60–100 bpm; APACHE II: 4 pts for HR ≥180 or <40 bpm